Wildfires, which have been occurring increasingly in the era of climate change, emit massive
amounts of particulate matter (PM) into the atmosphere, strongly affecting air quality and
public health. Biomass burning aerosols may contain environmentally persistent free
radicals (EPFRs, such as semiquinone radicals) and redox-active compounds that can
generate reactive oxygen species (ROS, including· OH, superoxide and organic radicals) in
the aqueous phase. However, there is a lack of data on EPFRs and ROS associated with …